<template>
    <div class="login-wrap">
        <div class="ms-title">后台管理家开放系统</div>
        <div class="ms-login">
            <el-form :model="ruleForm" :rules="rules" ref="ruleForm" label-width="0px" class="demo-ruleForm">
                <el-form-item prop="username">
                    <el-input v-model="ruleForm.username" placeholder="username"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input type="password" placeholder="password" v-model="ruleForm.password" @keyup.enter.native="submitForm('ruleForm')"></el-input>
                </el-form-item>
                <div class="login-btn">
                    <el-button type="primary" :loading="button.loading" @click="submitForm('ruleForm')">{{ button.text }}</el-button>
                </div>
                <p style="font-size:12px;line-height:30px;color:#999;">Tips : 用户名和密码随便填。</p>
            </el-form>
        </div>
    </div>
</template>
<script>
    export default {
        data: function() {
            return {
                ruleForm: {
                    username: '',
                    password: ''
                },
                rules: {
                    username: [
                        { required: true, message: '请输入用户名', trigger: 'blur' }
                    ],
                    password: [
                        { required: true, message: '请输入密码', trigger: 'blur' }
                    ]
                },
                button: {
                    text: '登录',
                    loading: false
                }
            }
        },
        methods: {
            submitForm(formName) {
                const self = this;
                self.$refs[formName].validate((valid) => {
                    if (valid) {
                        this.$http.post(this.ApiServer.api.login, {'name': self.ruleForm.username, 'password': self.ruleForm.password,}).then((response) => {
                            // 提交登录状态
                            self.button.text = '登录中...';
                            // 全局状态提交 - AccessToken
                            self.$store.commit('setAccessToken', response.data.token);
                            self.$store.commit('login');
                            // LocalStorage信息存储
                            localStorage.access_token = self.$store.state.access_token;
                            // 信息提示
                            this.$message('登录成功！获取用户信息中...');
                            self.button.text = '获取用户信息中...';
//                                // 获取用户信息
                            self.$http.get(this.ApiServer.api.user, {
                                headers: {
                                    'Authorization': 'Bearer' + self.$store.state.access_token
                                }
                            }).then((response) => {
                                // Vuex全局状态提交 - LoginStatus
                                self.$store.commit('setUser', response.data.data);
                                self.button.text = '跳转中...';
                                // 信息提示
                                self.$message.success('获取信息成功！');
                                // 跳转
                                setTimeout(() => {
                                    this.$router.push('home');
                                }, 1000);
                            }, (error) => {
                                self.button = {
                                    loading: false,
                                    text: '登录'
                                };
                                self.$message.error('获取信息失败！');
                            });
                        }, (error) => {
                                if (error.response.status === 401) {
                                    self.button.loading = false;
                                    self.$message.error('用户名密码错误');
                                } else if(error.response.status === 500) {
                                    self.button.loading = false;
                                    self.$message.error('用户异常');
                                }
                        });
                    } else {
                        console.log('error submit!!');
                        self.$message.error('请填写有效信息！');
                    }
                });
            }
        }
    }
</script>
<style scoped>
    .login-wrap{
        position: relative;
        width:100%;
        height:100%;
    }
    .ms-title{
        position: absolute;
        top:50%;
        width:100%;
        margin-top: -230px;
        text-align: center;
        font-size:30px;
        color: #fff;
    }
    .ms-login{
        position: absolute;
        left:50%;
        top:50%;
        width:300px;
        height:160px;
        margin:-150px 0 0 -190px;
        padding:40px;
        border-radius: 5px;
        background: #fff;
    }
    .login-btn{
        text-align: center;
    }
    .login-btn button{
        width:100%;
        height:36px;
    }
</style>